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Naming Compounds. Objectives: Name ionic and covalent compounds based off of chemical formulas. Give a chemical formula based on a chemical name. Oxidation Numbers. The charge of an ion # of electrons gained or lost Only in ionic compounds Cation —positive Anino --negative.

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naming compounds

Naming Compounds

Objectives:

Name ionic and covalent compounds based off of chemical formulas.

Give a chemical formula based on a chemical name.

oxidation numbers
Oxidation Numbers
  • The charge of an ion
  • # of electrons gained or lost
  • Only in ionic compounds
  • Cation—positive
  • Anino--negative
how to name ionic compounds
How to name Ionic Compounds
  • Write the name of both elements, cation first
  • Change the anion’s ending to –ide
  • Write the name of the polyatomic ion
  • If an ion has various oxidation numbers (transitional metals), write the oxidation number in parentheses using roman numerals. (I, II, III, IV, V, VI, VII, VIII, IX, X)
ionic compounds
Ionic compounds
  • NaBr
    • Sodium bromide
  • NaCl
    • Sodium chloride
  • CaCl
    • Calcium chloride
  • FeCl3
    • Iron (III) chloride
ionic formulas
Ionic Formulas
  • Write each ion. Put cation first
  • Overall charge must equal zero.
    • If charges cancel, just write the symbols
    • If not, crisscross the charges to find subscripts
  • Use parentheses when more than one polyatomic ion is needed.
  • Roman numerals indicate the oxidation number
give the formula
Give the Formula
  • Potassium chloride
  • Magnesium bromide
  • Copper (II) chloride
  • Calcium oxide
  • Iron (III) oxide
common polyatomic ions
Common Polyatomic Ions
  • Ammonium
    • NH4+
  • Hydronium
    • H3O+
  • Bicarbonate
    • HCO3-
  • Cyanide
    • CN-
  • Hydrogen sulfate
    • HSO4-
  • Hydroxide
    • OH-
  • Nitrate
    • NO3-
  • Nitrite
    • NO2-
slide8
More…
  • Perchlorate
    • ClO4-
  • Permanganate
    • MnO4-
  • Carbonate
    • CO32-
  • Chromate
    • CrO42-
  • Dichromate
    • Cr2O72-
  • Hydrogen phosphate
    • HPO42-
  • Sulfate
    • SO42-
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More…
  • Sulfite
    • SO32-
  • Thiosulfate
    • S2O32-
  • Phosphate
    • PO43-
naming ionic compounds with polyatomic ions
Naming Ionic Compounds with Polyatomic Ions
  • Na2CO3
  • Na2SO4
  • Calcium nitrate
  • Magnesium nitrate
  • Aluminum chlorate
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